interfaces – Set parameters for other packages, conveniently

The pack­age pro­vides a small num­ber of con­ve­nient macros that
ac­cess fea­tures in other fre­quently-used pack­ages, or
pro­vide in­ter­faces to other use­ful fa­cil­i­ties such as the pdfTeX\pdfe­lapsed­time prim­i­tive.
Most
of these macros use pgfkeys to
pro­vide a key-value syn­tax. The pack­age also uses the
pack­age scrl­file from the
Koma-Script bun­dle (for
con­trolled load­ing of other files) and
etool­box.

The pack­age is bun­dled with sub-pack­ages con­tain­ing ac­tual in­ter­faces:
by de­fault, the pack­age loads all avail­able
sub-pack­ages, but tech­niques are pro­vided for the user to se­lect
no more than the in­ter­faces needed for a job.